(CNN) – Republican Indiana Gov. Mitch Daniels had some advice for Mitt Romney this week, describing the likely Republican nominee's campaign for the White House as too negative.
"You have to campaign to govern, not just to win," Daniels said an in interview published Thursday with the Indianapolis Star.
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The governor, who's often cited as a potential Republican running mate for Romney, reportedly told the newspaper that "political victories that follow 'slash-and-burn' campaigns seldom lead to great accomplishments," referring to the already-bitter war underway between Romney and the president's re-election campaign.
"Spend the precious time and dollars explaining what's at stake and a constructive program to make life better," Daniels said. "And as I say, look at everything through the lens of folks who have yet to achieve."
The writer of the piece, Matthew Tully, wrote that Daniels took a pause, then continued with disappointment: "Romney doesn't talk that way."
He added: "You don't change one thing about the policies you advocate or your principles,' he said, noting instead that candidates should simply make clear how their policies would lift up those who are struggling."
His comments came the same day the two-term governor publicly endorsed Romney, more than a week after former Sen. Rick Santorum of Pennsylvania left the race, leaving a clear path for Romney to soon clinch the nomination.
Daniels has repeatedly pushed back at speculation that he could be tapped for the GOP vice presidential nominee. Last year Daniels considered his own bid for the GOP nomination before deciding against launching a campaign.
"Well it won't happen so we won't take the audience's time with it, but I'll be glad to be a No. 22 or wherever I can fit in in terms of supporting a winning campaign," Daniels said on Fox News Wednesday, shortly after making his endorsement.